Now don't get me wrong some inflexibilities will be immediately helped with this aid, but as each body is different so is each practice. I don't really like getting the stink eye in class for not getting more things that will go unused by my mat. I'm here for yoga, not aerobics. I want to connect with myself and not spend 3 minutes listening the proper hand placement on a block, where I can place my blanket and how to adjust a strap. Trust me if I'm not ready I will back off into an alternate posture. It just seems (for me) like an interruption. I'm settling into a sweet conversation with my breath flow, movement, my thoughts are going to useful and peaceful places, and suddenly I have to stop so we can all gather things to place around us. I want to unclutter not gather.
Maybe it's the minimalist in me but I don't think everyone needs blocks and blankets all the time for every pose. For me I know that if my body isn't ready or not feeling super flexible in supposed to back off and go when I'm supposed to. I have my whole life to become a human pretzel and I want to savor every moment ego breaking moment of 'I thought I could do this, welp there's always next time' or 'I hope my face doesn't bruise from my make out sesh with gravity' sans stuff.